Urgent Safety Advice Notice / Safety Advice Notice
At the early stages of an investigation the RAIU may make some early findings on safety issues that require immediate action, in these cases the RAIU issue an Urgent Safety Advice Notice (USAN) Investigation Report or a Safety Advice Notice (SAN) Investigation Report. The purpose of issuing USAN/SANs is that the RAIU can make safety recommendation to Implementers and Addressees promptly. Upon issuance of USAN/SANs no further investigation may be required.
Completed USAN/SAN
24 November 2025
USAN 006 - Safety of Track Workers on or near the line
10 September 2024